Question

A scientist is studying the effect of nitrates, a group of chemicals, on the aquatic environment and the organisms that live within it, such as aquatic snails and fish. This scientist is a(n) __________.

A)
entomologist
B)
chemist
C)
hydrologist
D)
oceanographer
E)
toxicologist

Answer 1

Answer: toxicologist-E

Step-by-step explanation:

A toxicologist studies the effects of chemicals (nitrates) on environment (aquatic in this case). The scientist described is a Toxicologist.

Answer 2

A scientist who studies water and its properties is a hydrologist.

Step-by-step explanation:

A hydrologist is a scientist linked to the study of water, both surface and underground, detecting cleanliness or contamination and proposing alternatives for its cleaning and conservation.

A hydrologist's research on the properties of water, its location, distribution and circulation contributes to the maintenance of the environment.

The other options are not correct because:

A) Entomologist : a scientist who studies insects.

B) Chemist : a professional who studies the elements and chemical compounds and their properties.

D) Oceanographer : study both oceans and seas, and their relationship with the environment, the atmosphere and the land.

E) Toxicologist: study the effects of toxic or harmful substances on living beings and the environment.